Date and meringue cake

Preheat the oven to 160C/Gas2; line a 24cm round springform tin, with nonstick baking paper; place the dates, bicarbonate of soda and water in a bowl and set aside for 15 minutes to soak; blend until smooth
Beat the butter, vanilla, sugar and orange rind together for 10-12 minutes, until pale and creamy; scrape down the sides of the bowl and add the eggs, one at a time, beating well after each addition; add the flour, date mixture, ground almonds, golden syrup and pistachios and beat until well combined
Spoon into the tin and bake for 30-35 minutes or until a skewer comes out clean when inserted in the centre; allow to cool in the tin
Increase the oven temperature to 180C/Gas4; whisk the egg whites until stiff peaks form; add the sugar one tablespoon at a time whisking for 30 seconds, before adding more; whisk for a further 6 minutes or until stiff and glossy; scrape down the sides and add the vinegar and cornflour and whisk for 2 more minutes to combine
Spread the meringue over the top of the cake and bake for 15-20 minutes or until the meringue is just golden and dry to the touch; allow the cake to stand at room temperature for 15 minutes; gently run a knife around the inside edge of the tin and remove the ring; allow to cool slightly; refrigerate for 2 hours; dust with icing sugar and serve